Download GTU BE/B.Tech 2019 Winter 5th Sem Old 151006 Applied Electronics Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 5th Sem Old 151006 Applied Electronics Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?V (Old) EXAMINATION ? WINTER 2019
Subject Code: 151006 Date: 27/11/2019

Subject Name: Applied Electronics
Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) State different types of temperature transducers. Explain them in brief. 07
(b) Describe SMPS with necessary diagram and waveform. 07

Q.2 (a) Draw and explain block diagram and voltage transfer characteristics of an ideal
Op-amp. What is virtual ground concept?
07
(b) What is Digital Multi Meter? Draw and Explain the block diagram of DMM.
Also state the advantages of DMM.
07
OR
(b) Define the following terms: CMRR, Slew rate, Transducer, Photoemission
effect, Intrinsic standoff ratio(?), Duty cycle, Multiplexer
07

Q.3 (a) With the help of the block diagram, explain the operation of a single trace
Cathod Ray Oscilloscope. ( CRO )
07
(b) Derive the expression of OP-AMP for non-inverting closed loop voltage
gain. ( Avf )
07
OR
Q.3 (a) Explain working and principal of storage oscilloscope? 07
(b) Draw the block diagram of IC 555 and discuss the function of trigger and
control voltage pins.
07

Q.4 (a) Explain concept and operation of Washing Machines with necessary block
diagram in detail.
07
(b) Explain the principal and working of Thermocouple. Compare it with RTD. 07
OR
Q.4 (a) Explain SCR in Detail. 07
(b) Explain the optocoupler/Isolator in details. Also explain one application. 07

Q.5 (a) What is combinational circuit? Explain any one combinational circuit with
necessary circuit diagram in detail.
07
(b) Explain architecture of 8051 with block diagram. 07
OR

Q.5 (a) Explain Karnaugh map representation with example. 07
(b) Explain characteristic of UJT. Discuss UJT as a Relaxation Oscillator with circuit
and waveforms.
07

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